[置顶] JAVA学习路线

一:J2SE 面向对象-封装、继承、多态内存的分析递归集合类、泛型、自动打包与解包、AnnotationIO 多线程、线程同步 TCP/UDP AWT、事件模型、匿名类正则表达式反射机制2:数据库(Oracle或者MySQL)SQL语句多表连接,内外连接, 子查询等管理表、视图、索引、序列、约束等树状结构存储存储过程、触发器 数据库设计三范式、3:JDBCJDBC基础连接池 树状结构存储与展现Da

佛曰

此身如同臭皮囊,色身无常,此身非我,须当厌离

痛失新车

2009.11.23日晚,新车被盗。悲。

农夫养牛问题

一个农夫养了一头牛,三年后,这头牛每年会生出1头牛,生出来的牛三年后,又可以每年生出一头牛,请问农夫10年后有多少头牛?n年后呢?必要条件:生下来的全是母牛,且无不孕不育症,有专业公牛负责。斐波那契函数解决方法:    //总时间    String inputStr = 10;    //周期 &

文件上传

本人超级新人,折腾了一下午写的。用Hashtable存储表单项及其值,本来想做成兼容同名的,结果搞得个四不像,求指导。 FileUpload.java[code=Java]package business;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.i

新买的自行车

 

猜数字升级版

package org.blackice;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class GuestNumber {

        /**
         * @param args
...

猜数字游戏

package org.blackice.test;
import java.util.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class GuestNumber {

        /**
         * @param args
...

杨辉三角

public class YangHui{
        public static void main(String arg[]){
                int i=1,j=1,iOf=0;
                int iN = 20;
...

求阶乘

public class Factor{
        public static void main(String arg[]){
                int i=1,j=1,iR=0;
                int[] arr = new int[]{2,4,6,10};
...

java内存泄露

Java的一个重要优点就是通过垃圾收集器(Garbage Collection,GC)自动管理内存的回收,程序员不需要通过调用函数来释放内存。因此,很多程序员认为Java不存在内存泄漏问题,或者认为即使有内存泄漏也不是程序的责任,而是GC或JVM的问题。其实,这种想法是不正确的,因为Java也存在内存泄露,但它的表现与C++不同。随着越来越多的服务器程序采用Java技术,例如JSP,Servlet

8% Rejects to 2%, 20–25% Waste Cut: How an Asia Moving-Box Operation Rebuilt Its Corrugated Workflow

A production manager’s account of an end-to-end corrugated box revamp—flexo, digital, substrates, and the messy parts in between—at a regional moving-supplies brand in Asia. [...]
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Digital Printing vs Flexographic Printing: A Technical Comparison You Can Put Into Production

A sales-manager’s implementation guide for European converters weighing Digital vs Flexo, with practical parameters, EU compliance, troubleshooting, and a clear path to deployment. [...]
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An Engineer’s Guide to Digital Printing for Business Cards: Color Control, Finishes, and Real-World Trade-offs

A practical, brand-centered guide to designing and producing business cards with production-ready specs, from print tech selection to color management and finish choices. [...]
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2025 Packaging Design Trends: The Rise of Digital Printing

A printing engineer’s take on how digital printing, finishing, and color control are reshaping sticker design—from shelf impact to variable data and QR-driven experiences. [...]
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How to Choose the Right Substrate for Your Brand

A sales-minded, design-forward guide that walks through real brand decisions—from values to materials to finishing—anchored in an Asia market story and practical metrics brands can act on. [...]
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Where Sheet Labels Work: E‑Commerce Dispatch, Retail Backrooms, and Regulated Packs

A practical look at how sheet labels perform across real European workflows—shipping, retail, healthcare, and chilled food—plus a clear answer on how to mail merge labels from Excel and choose the right materials for durability. [...]
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3 Brands That Nailed Box and Poster Design with Spot UV vs Soft‑Touch

A packaging designer’s comparative look at Spot UV and Soft‑Touch across retail posters and boxes—what works, where it falls short, and how to make color, substrate, and finish decisions stick globally. [...]
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Print-Ready Packaging Design: What Actually Works

A print engineer’s field guide to designing packaging that looks great on screen and runs clean on press—covering print tech choices, visual hierarchy, substrates, shelf impact, finishes, and digital integration. [...]
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Industry Experts Weigh In on Digital Printing’s Future for Labels

Global brand managers discuss how hybrid presses, UV-LED systems, and on-demand workflows are reshaping label strategies—through real innovation cases, pragmatic trade-offs, and data-backed viewpoints. [...]
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Industry Experts Weigh In: Digital, Hybrid, and the New Rules of Corrugated Packaging

North American brand leaders discuss where corrugated packaging is headed next—through the lens of real innovation cases, measurable outcomes, and practical trade-offs. [...]
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